3012012221 has 4 divisors (see below), whose sum is σ = 3170539200. Its totient is φ = 2853485244.

The previous prime is 3012012217. The next prime is 3012012253. The reversal of 3012012221 is 1222102103.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3012012221 - 2² = 3012012217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3012012196 and 3012012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3012015221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79263461 + ... + 79263498.

It is an arithmetic number, because the mean of its divisors is an integer number (792634800).

Almost surely, 2^3012012221 is an apocalyptic number.

It is an amenable number.

3012012221 is a deficient number, since it is larger than the sum of its proper divisors (158526979).

3012012221 is a wasteful number, since it uses less digits than its factorization.

3012012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158526978.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 3012012221 is about 54881.8022754355. The cubic root of 3012012221 is about 1444.1719646248.

Adding to 3012012221 its reverse (1222102103), we get a palindrome (4234114324).

The spelling of 3012012221 in words is "three billion, twelve million, twelve thousand, two hundred twenty-one".